Born in Northumbria, he went to Ireland. From there he went to Friesland in Holland (c. 690) accompanied by eleven other monks from England. Six years later he was consecratedbishop with the name of "Clement," and he founded his Cathedral in Utrecht. His work with the Frisians bore much fruit, as also in Heligoland and Denmark. He founded the monastery of Echternach in Luxembourg in 698 where his relics remain.